Diy Bed Frame with Trundle.
This is obviously much more expensive than the original design, but the other option is actually not much better than a mattress on the floor. A well-designed trundle bed frame should be easily lifted and locked. It is important to check that your trundle is equipped with the correct catch to connect the two.

Botany Bed Frame With Trundle

Full Bed Frame With Trundle

How To Make A Bed Frame With Trundle

King Bed Frame With Trundle

Sam Bed Frame With Trundle And Storage Drawers

Single Bed Frame With Trundle

Twin Bed Frame With Trundle Pop Up

White Bed Frame With Trundle